Method for preparing reinforced multigrade bitumen/polymer...

C - Chemistry – Metallurgy – 08 – L

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C08L 95/00 (2006.01) C08J 3/24 (2006.01) C08K 3/06 (2006.01) C08K 3/24 (2006.01) C08K 3/30 (2006.01) C08K 3/32 (2006.01) C08K 5/41 (2006.01)

Patent

CA 2208253

Bitumen/polymer compositions with a broadened plasticity range are produced by contacting a bitumen or bitumen mixture with a sulphur-cross-linkable elastomer and a sulphur-donating coupling agent, at 100-230 DEG C and under stirring conditions, to produce a cross-linked bitumen/polymer composition, then adding to the composition, maintained at 100-230 DEG C and under stirring conditions, an acidic additive selected from polyphosphoric acids, acids of formula R-(COO)t-SO3H, wherein t = 0 or 1 and R is a monovalent hydrocarbyl radical having up to 12 carbon atoms, and mixtures of both types of acid separately or jointly with sulphuric acid, and maintaining the resulting reaction medium at 100-230 DEG C and under stirring conditions for at least ten minutes. Said bitumen/polymer compositions may be used directly or in diluted form to produce bituminous binders for making road surfaces, coated materials or sealing coatings.

Des compositions bitume/polymère à intervalle de plasticité élargi sont produites en mettant en contact, entre 100°C et 230 °C et sous agitation, un bitume ou mélange de bitumes avec un élastomère réticulable au soufre et un agent de couplage donneur de soufre pour produire une composition bitume/polymère réticulée, puis en incorporant à ladite composition, maintenue entre 100°C et 230°C et sous agitation, un adjuvant acide choisi parmi les acides polyphosphoriques, les acides de formule R-(COO)t-SO3H où t = 0 ou 1 et R désigne un radical monovalent hydrocarbyle jusqu'à C12 et les mélanges des deux types d'acide entre eux ou/et avec l'acide sulfurique, et en maintenant le milieu réactionnel obtenu entre 100 °C et 230 °C et sous agitation pendant au moins 10 minutes. Ces compositions bitume/polymère sont utilisables, directement ou après dilution, pour former des liants bitumineux pour la réalisation de revêtements superficiels routiers, d'enrobés et de revêtements d'étanchéité.

LandOfFree

Say what you really think

Search LandOfFree.com for Canadian inventors and patents. Rate them and share your experience with other people.

Rating

Method for preparing reinforced multigrade bitumen/polymer... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method for preparing reinforced multigrade bitumen/polymer..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for preparing reinforced multigrade bitumen/polymer... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFCA-PAI-O-1845376

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.